Find out which device is using most bandwidth on my network

We just moved and changed from Charter to Comcast. I'm not sure if it's just the area we live in or if it's Comcast in general, but they have a cap on our data now. We're allocated 300 GB a month. It's our second month. They're giving us 3 50 GB courtesy refills. We're on our second already half way through the month. I need to find which device is using the most bandwidth and the it would be nice to somehow have whatever the device that is monitoring the bandwidth to maybe even report which TCP port is using the most bandwidth, or even better, which application or what the data type that is using the bandwidth. Is there anything like that which is within a home consumer's price range?

If you are only using Netflix then surely you don't need to know what application and data type is using the bandwidth. (Hint - it is probably Netflix.)

Just ask everyone who is using it to keep a rough record of what they watch, and for how long, and the culprit ought to be fairly obvious. If it is a problem then perhaps you need to revert to an ISP with unlimited downloads.

There's your answer. According to the following article: "North American subscribers who “exhibit” cord-cutting behavior (which it defines as the top 15 percent of streaming video users) consume on average 212GB per month — that’s more than seven times the 29GB consumed by the “typical” user".

In the light of the last para in #6 we could do a quick malware check. Download this program from here (green button top right):http://filehippo.com/download_malwa...Before you run it go to "Settings > Detection and Protection" and put a check mark in "Scan for rootkits". I appreciate that you are likely to have an antivirus but this often finds what they miss.

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